Island



(No Model.)

0. H. PERKINS.

METHOD OF TREATING STOCK FOR HORSBSHOE GALKS.

No. 312.505,. Patented Feb. 17, 1885.

WITNEEEEE. ZNVZN TUE.

UNITED STATES PATENT FFICE.

CHARLES H. PERKINS, OF PROVIDENCE, RHODE ISLAND.

METHOD OF TREATING STOCK FOR HORSESHOE-CALKS.

SPECIFICATION forming part of Letters Patent No. 312,505, dated February 17, 1885.

Application filed July 25, 1884. (No model.)

To all whom/it may concern:

Be it known that I, CHARLES H. PERKINS, of the city and county of Providence, and State of Rhode Island, have invented a new and Improved Method of Treating Stock for Horseshoe-Calks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, forming a part of this specification.

My invention relates to that class of stock for horseshoe-ealks which consists of a bar of iron or steel provided at intervals with tips, which are designed to be driven into the heated shoe for the purpose of strongly uniting the calk to the shoe.

The object of my present invention is to harden and lengthen and point the tips so that they shall more effectively perform their required function.

To this purpose my invention consists in cold-rolling or swaging the stock, whereby the tips are hardened,lengthened, and pointed, as hereinafter described.

In the accompanying drawing, the figure illustrates in perspective a stock-bar embodying my invention, the results of my improved treatment being indicated in dotted lines.

In the said drawing, A designates the bar, which, when out into proper lengths, forms the calks. B B designate the tips, and c 0 indicate the points at which the bar is to beand then between rolls which are provided at intervals with cavities shaped to conform to the shape of the tips, so that the tongue is rolled down at all points excepting where the tips are formed. The tips may be formed by swaging or otherwise, instead of rolling, as described, and the calks are designed to be furnished to the trade in the form of bars, each calk being struck off from the bar by the shoer as required.

The above description is merely preliminary to. a complete comprehension of the method constituting my present invention. After the tips B-one or more of which may be formed for each calkhave been rolled, the bar is cooled, and is then passed in a cold state through rolls which are so shaped peripherally as to lengthdrawing. During the lengthening and pointing of the tips they are also hardened, so that they will not bend or soften while being driven into the heated shoe.

Instead of cold-rolling the stock as above described, the same results maybe produced by swaging the stock in a cold state by suitably-shaped dies. This result is important, because it insures the proper position of the calk upon the shoe, the tips B when not hardened being liable to bend and soften, thus rendering the proper attachment of the calk difficult.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The method herein described of treating horseshoe-call: stock, consisting in cold-rolling or swaging the bars having the tips for the purpose of hardening, lengthening, and pointing the tips, as described.

CHARLES H. PERKINS.

WVitnesses:

J. A. MILLER, Jr., M. F. BLIGH.

en and point the tips, as is shown at b in the 

